from typing import List
from sqlalchemy.orm import Session
from sqlalchemy import func
from .schemas import (
    Library,
    NewLibraryParam,
    Folder,
    NewEntityParam,
    Entity,
    Plugin,
    NewPluginParam,
    UpdateEntityParam,
    NewFolderParam,
)
from .models import (
    LibraryModel,
    FolderModel,
    EntityModel,
    EntityModel,
    PluginModel,
    LibraryPluginModel,
)


def get_library_by_id(library_id: int, db: Session) -> Library | None:
    return db.query(LibraryModel).filter(LibraryModel.id == library_id).first()


def create_library(library: NewLibraryParam, db: Session) -> Library:
    db_library = LibraryModel(name=library.name)
    db.add(db_library)
    db.commit()
    db.refresh(db_library)

    for folder_path in library.folders:
        db_folder = FolderModel(path=str(folder_path), library_id=db_library.id)
        db.add(db_folder)

    db.commit()
    return Library(
        id=db_library.id,
        name=db_library.name,
        folders=[
            Folder(id=db_folder.id, path=db_folder.path)
            for db_folder in db_library.folders
        ],
        plugins=[],
    )


def get_libraries(db: Session) -> List[Library]:
    return db.query(LibraryModel).all()


def get_library_by_name(library_name: str, db: Session) -> Library | None:
    return (
        db.query(LibraryModel)
        .filter(func.lower(LibraryModel.name) == library_name.lower())
        .first()
    )


def add_folder(library_id: int, folder: NewFolderParam, db: Session) -> Folder:
    db_folder = FolderModel(path=str(folder.path), library_id=library_id)
    db.add(db_folder)
    db.commit()
    db.refresh(db_folder)
    return Folder(id=db_folder.id, path=db_folder.path)


def create_entity(library_id: int, entity: NewEntityParam, db: Session) -> Entity:
    db_entity = EntityModel(**entity.model_dump(), library_id=library_id)
    db.add(db_entity)
    db.commit()
    db.refresh(db_entity)
    return db_entity


def get_entity_by_id(entity_id: int, db: Session) -> Entity | None:
    return db.query(EntityModel).filter(EntityModel.id == entity_id).first()


def get_entities_of_folder(
    library_id: int, folder_id: int, db: Session, limit: int = 10, offset: int = 0
) -> List[Entity]:
    folder = (
        db.query(FolderModel)
        .filter(FolderModel.id == folder_id, FolderModel.library_id == library_id)
        .first()
    )
    if folder is None:
        return []

    entities = (
        db.query(EntityModel)
        .filter(EntityModel.folder_id == folder_id)
        .limit(limit)
        .offset(offset)
        .all()
    )
    return entities


def get_entity_by_filepath(filepath: str, db: Session) -> Entity | None:
    return db.query(EntityModel).filter(EntityModel.filepath == filepath).first()


def remove_entity(entity_id: int, db: Session):
    entity = db.query(EntityModel).filter(EntityModel.id == entity_id).first()
    if entity:
        db.delete(entity)
        db.commit()
    else:
        raise ValueError(f"Entity with id {entity_id} not found")


def create_plugin(newPlugin: NewPluginParam, db: Session) -> Plugin:
    db_plugin = PluginModel(**newPlugin.model_dump(mode="json"))
    db.add(db_plugin)
    db.commit()
    db.refresh(db_plugin)
    return db_plugin


def add_plugin_to_library(library_id: int, plugin_id: int, db: Session):
    library_plugin = LibraryPluginModel(library_id=library_id, plugin_id=plugin_id)
    db.add(library_plugin)
    db.commit()
    db.refresh(library_plugin)


def get_entity_by_id(entity_id: int, db: Session) -> Entity | None:
    return db.query(EntityModel).filter(EntityModel.id == entity_id).first()


def update_entity(
    entity_id: int, updated_entity: UpdateEntityParam, db: Session
) -> Entity:
    db_entity = get_entity_by_id(entity_id, db)
    for key, value in updated_entity.model_dump().items():
        setattr(db_entity, key, value)
    db.commit()
    db.refresh(db_entity)
    return db_entity